Peritoneal dialysis system with variable pressure drive

A - Human Necessities – 61 – M

Patent

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A61M 1/28 (2006.01) A61M 5/148 (2006.01)

Patent

CA 2204503

A variable pressure drive peritoneal dialysis system (10) has a pneumatic pressure system (16) for purging and controlling a flow of dialysate through a disposable dialysate cassette (23) of a disposable dialysate delivery set (21). The pneumatic pressure system (16) has a variable-opening flow proportional valve for supplying air at selected profiled pressure or vacuum to a pneumatic interface (18). The disposable dialysate cassette (23) has a diaphragm pump (P1, P2) actuable by the profiled air pressure or vacuum to move dialysate to and from a patient (28) via the disposable dialysate delivery set (21) at a desired profiled dialysate pressure.

L'invention concerne un système de dialyse péritonéale (10) à commande de pression variable, présentant un système à pression pneumatique (16) pour purger et réguler un flux de dialysat à travers une cassette de dialysat (23) d'un ensemble de distribution de dialysat jetable (21). Le système à pression pneumatique (16) comprend une vanne proportionnelle à ouverture variable servant à amener de l'air à une interface pneumatique (18) dans des conditions de pression et de vide sélectionnées. La cassette de dialysat jetable (23) présente une pompe à membrane (P1, P2) pouvant être actionnée par la pression de l'air ou le vide pour transférer le dialysat en direction et à partir d'un patient (28) au moyen de l'ensemble de distribution de dialysat jetable (21), dans des conditions de pression du dialysat souhaitées.

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